Year	Cases per 100,000
1990	4.49
1991	4.48
1992	4.47
1993	4.46
1994	4.44
1995	4.44
1996	4.49
1997	4.56
1998	4.62
1999	4.68
2000	4.76
2001	4.8
2002	4.85
2003	4.9
2004	4.96
2005	5.02
2006	5.04
2007	5.05
2008	5.08
2009	5.1
2010	5.13
2011	5.08
2012	5.05
2013	5.01
2014	4.98
2015	4.94
2016	4.91